: The first thing to understand is that septic tank installations are regulated. Therefore, you have to contact your agency for their requirements and whether they will approve a home made tank. If they do, then they will also have the rest of the specifications, i.e., leach field dimensions based on your perc test, bedding, etc.

: : I would like to form and pour my on septic tank.: : I need to know what the inside looks like, where the holes go, how much gravel goes under the pipe, how long they need to be.: : I have a three bed room house ,with lowest seapage rate.: : I have heard you can stack them, I have heard all kind of stuff .: : I need someone who knows to draw me a digram.: : thanks: : Jay